JS Playground Demo

• 05 Jan 2026
•
• demo,
• javascript,
• playground

This post demonstrates the new JavaScript Playground feature. You can write and execute JavaScript code directly in your browser!

Basic Example

Try clicking the "Run" button or press Ctrl+Enter to execute the code:

Working with Variables

Loops and Arrays

Objects and JSON

Error Handling

The playground also shows errors nicely:

Async Code (Immediate)

Note: The playground executes synchronously, but you can still test immediate async patterns:

Math and Algorithms

Feel free to edit any of the code blocks above and experiment! The playground supports all modern JavaScript features.

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